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Polyether-ether-ketone material and modification method based on plasma immersion ion implantation and application

A polyetheretherketone and plasma technology, which is applied in the field of biomedical materials, can solve the problems of complicated and tedious operation process, different properties of PEEK, and insufficient bonding, and achieves simple cleaning procedures, improved mechanical properties, and good cell compatibility. Effect

Active Publication Date: 2017-05-24
CHINA MOREFOUND TECH LTD SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are also many defects in the existing surface modification technology: both wet chemical surface modification and photo-induced surface grafting methods require thorough cleaning and purification due to the use of organic reagents, and the operation process is relatively complicated and cumbersome; PEEK surface coating with functional coating The layer is easy to operate, but the properties of metal and inorganic coatings are significantly different from those of polymer-based PEEK, and there may be a problem of insufficient bonding between the coating and the substrate material.

Method used

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  • Polyether-ether-ketone material and modification method based on plasma immersion ion implantation and application
  • Polyether-ether-ketone material and modification method based on plasma immersion ion implantation and application
  • Polyether-ether-ketone material and modification method based on plasma immersion ion implantation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0069] The polyether ether ketone disc with a diameter of 15 mm and a height of 2 mm was polished and cleaned with acetone, alcohol, and deionized water by ultrasonic cleaning for 20 minutes each time. After cleaning, it was dried in an oven at 40°C and stored properly. The sample after this pretreatment is called PEEK control.

[0070] Plasma immersion ion implantation technology is used to deposit a diamond-like carbon film on the surface of the preserved polyetheretherketone. The specific process parameters are shown in Table 1. The obtained sample is called DLC / PEEK.

[0071] Table 1 Process parameters of diamond-like carbon film deposition

[0072]

[0073] Note: sccm = standard cubic centimeter per minute

[0074] Raman spectrum analysis of DLC / PEEK surface, using laser Raman spectrometer to measure the Raman spectrum curve of DLC film, the laser wavelength is 514.5nm, and the spectrum measurement range is set to 1000~1800cm -1 , Step length 2cm -1 ,get figure 2 In the Raman sp...

Embodiment 2

[0077] Place the DLC / PEEK sample with a diameter of 15mm and a height of 2mm on a stainless steel circular tray, and then put it in a vacuum chamber to vacuum, and introduce argon for cleaning for 5 minutes to ensure the removal of contaminants and oxides on the sample surface.

[0078] Plasma immersion ion implantation technology is used to inject ammonia into the surface of DLC / PEEK. The specific process parameters are shown in Table 2. The sample obtained is called NH 2 -DLC / PEEK.

[0079] Table 2 DLC / PEEK surface NH 3 -PIII process parameters

[0080]

[0081] Note: sccm = standard cubic centimeter per minute

[0082] X-ray photoelectron spectroscopy (XPS) wide-field scanning was performed on the surface of the single modified and double modified polyether ether ketone samples obtained in Examples 1 and 2, and the instrument conditions were as follows: Al Kα excitation source, target voltage and target current, respectively 15kV and 10mA, the vacuum chamber pressure is less than 2...

Embodiment 3

[0085] The nano-scratch technology was used to evaluate the surface mechanical properties of the polyether ether ketone material treated in the above examples 1 and 2. The loading force was 10N. Taking into account the contact area between the spherical ball indenter and the sample surface, the loading pressure was approximately 0.9~1GPa; the sample surface rubs to form a circle with a diameter of 10mm, and the rotation speed is 573r / min. It wears a total of 600s, which is converted into a total stroke length of 180m.

[0086] Figure 4 It represents the relationship between surface friction coefficient and time, the abscissa represents the loading time, and the ordinate represents the corresponding friction coefficient. by Figure 4 It can be seen that the friction coefficient is slowly increasing with time. At the same time, a clear and intuitive scanning electron microscope image of the scratched surface is obtained, namely Figure 5a with Figure 5b . Figure 5a It is the sca...

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Abstract

The invention provides a polyether-ether-ketone material and a modification method based on plasma immersion ion implantation and application. The modification method comprises the steps: depositing a diamond-like film on the surface of the polyether-ether-ketone material by the plasma immersion ion implantation technique or depositing the diamond-like film and introducing nitrogen-containing active functional groups, and thus obtaining a surface-modified polyether-ether-ketone material. The surface-modified polyether-ether-ketone material can be applied to the fields such as medical regeneration materials, functional materials, bioactive materials, etc. The modification method does not reduce the excellent mechanical property of main materials while greatly improving the biological activity of the surface of the polyether-ether-ketone material, therefore, the polyether-ether-ketone material has excellent biocompatibility and achieves the effect of repairing bone defects while promoting the regeneration function of new bones. The surface modification method based on the plasma immersion ion implantation technique has the advantages of simple process, low cost and mass production and benefits industrial production.

Description

Technical field [0001] The invention relates to a polyetheretherketone material and a modification method and application based on plasma immersion injection, belonging to the technical field of biomedical materials. Background technique [0002] Orthopedic material implantation is a common method used in the current clinical treatment of bone defect patients in modern medicine. Its greatest advantage is to avoid the secondary injury caused by autologous bone transplantation to the patient and the risk of virus infection and seriousness caused by allogeneic bone transplantation. Immune rejection. Among the many orthopedic implant materials that have been used clinically, medical titanium alloys are most widely used due to their excellent corrosion resistance and compatibility with osteoblasts and tissues (Niinomi M. Mechanicalbiocompatibilities of titanium alloys for biomedical applications. Journal of the Mechanical Behavior of Biomedical Materials 2008; 1:30-42). However, the...

Claims

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Application Information

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IPC IPC(8): C23C14/48C23C14/06
CPCC23C14/0605C23C14/48
Inventor 王怀雨刘涵霞童丽萍
Owner CHINA MOREFOUND TECH LTD SHENZHEN
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